TY - BOOK AU - Markussen T TI - Identification of PCR-based markers linked to the powdery-mildew-resistance gene Pl1 from Malus robusta in cultivated apple PY - 1995/// PB - Plant Breeding KW - Malus robusta KW - Malus x domestica KW - Podosphaera leucotricha KW - RAPD markers KW - SCAR markers ER -